determine the reaction time of the test participant and using the subtractive method identify the selection time and identification time of the participant. The experiments had one participant who participated in a total of 6 experiments; two experiments required a simple reaction with a single stimulus and 4 experiments that required a more complicated reaction. Keywords Subtractive method – the procedure of estimating the time it takes to perform various cognitive operations. Simple reaction – this
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SN1 Reactions For SN1 reactions it’s important to have a good leaving group because this reaction occurs in two steps. Because alcohol is such a poor leaving group it needs to be helped by silver nitrate to help promote the ionization of the alkyl halide. This helps form the products of the SN1 reaction. 2-chlorobutane This reaction didn’t occur because the carbocation isn’t stable enough for an SN1 reaction. 2-bromobutane This reaction occurred in 32 seconds. This reaction occurred quickly
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Aldol In this preparative lab‚ an aldol (trans-p-anisalacetophenone) was produced from the reaction between p-anisaldehyde and acetophenone with the presence sodium hydroxide. The reaction also showed the importance of an enolate and the role it played in the mechanism. Sodium hydroxide acts as a catalyst in this experiment and is chosen because of its basic conditions and pH. The acetophenone carries an alpha hydrogen that has a pKa between 18 and 20. This alpha hydrogen is acidic because of its
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Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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Coursework Rates of Reaction Research The rate of reaction tells us how quickly a chemical reaction takes place. It is important for people in industry to know how fast a reaction goes. They have to know exactly how much of their product they can make each hour‚ day or week. In a shampoo factory‚ the rate might be 100 bottles per minute. We can’t work out the rate of a reaction from its chemical equation. Equations can only tells us how much product we can get. They don’t say how quickly
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BIOL2220 Lab 3: Hill Reaction Introduction In 1937‚ Robert Hill discovered that isolated chloroplasts can generate oxygen when they are illuminated in the presence of a suitable electron acceptor‚ even in the absence of carbon dioxide. This finding was a landmark in the study of photosynthesis because it established that the source of the electrons used in the light reactions is water. It also confirmed that the released oxygen is derived from water instead of carbon dioxide. In chloroplasts
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Sabrina Lugo February 12th 2013 4:30pm I never lived for rainbows or eclipses just because of the conflict of interest for attention between what is brought out most within the spectrums of our personalities. To visually stimulate the brain‚ to object to reality‚ to imperfect the shade that is invisible to the eyes- FEAR OF KNOWING THE TRUTH Intertwining through and through creating emotions and depth to those objects we could not touch‚ we could not bear‚ we could not feel. Who savor the
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Foreign Policy Debate The Current U.S foreign policy in the Middle East has a goal to advance peace‚ security‚ and prosperity in the Middle East. The Current foreign Policy is also supposed to defeat Al-Qa’ida and its extremist affiliates in Afghanistan and Pakistan. The United States Foreign policy protects the U.S citizens by governing international relations‚ but the current U.S. foreign policy undermines our national security in the Middle East‚ through drone strikes‚ the war in Afghanistan
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CHAPTER 20 OPHTHALMIC SURGEON IN HONGKONG (1891-92) • Farewell to Europe: Oct 31‚ 1891 (2 weeks after Fili‟s publication)‚ left Ghent for Paris‚ bade farewell to friends (Lunas‚ Taveras‚ Venturas)‚ to Marseilles . • He boarded steamer Melbourne for Hongkong (HK) on Oct 18 bringing recommendation letter by Juan Luna for Manuel Camus with 600 copies of Fili; • befriended many passengers who were mostly missionaries for China including Fr. Fuchs whom he described as “A Father Damaso without
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Reminder: These notes are meant to supplement‚ not replace the laboratory manual. SN1 Reaction Notes Background and Application Substitution Nucleophilic First Order (SN1) reactions are one of the most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment‚ t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction
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